Served as a Case Management Master of the Ontario Superior Court of Justice in Toronto — a procedural-officer role (civil motions, case management) distinct from a full Justice. Ontario renamed the office of "Master" to "Associate Judge" in 2021; he is consequently referred to posthumously by the Ontario Bar Association as an "Associate Justice," but he was appointed and sat as a Master, not a puisne Justice. (Ontario Newsroom — Case Management Master Appointed in Toronto, OBA Just. Magazine tribute)
Full name Robert Andrew James ("Rob") Muir, born 1963; appointed a case management Master on September 25, 2009, and noted as the first openly gay Master ever appointed in Canada. (LGBTQ+ Judges, OBA Just. Magazine)